Where did you get this 15% figure? Granted I did read your post and noted the "over 15%" but you could easliy have said the front has over 1% more clamping force than the rear and still be right. Was that just a random number or did you actually find that somewhere?The factory Honda brakes are biased with over 15% more clamping force in the front. Despite being mid engined, the NSX still (like a majority of cars) transfers more weight under braking to the front of the car. Due to this, Honda used an additional piston, larger pistons, and a larger pad in the front brake system for the increased brake force required and also used wider discs up front due to the increased heat generated.
I think Dave's kit is a good one. Brembo's GT line has always been a great product that holds up to track abuse and fade, and always keeps a very consistant pedal feel. -big fan of Brembo's products. Ideally, Running F50's front and rear with a bias adjuster would be a better setup but then again, running Performance Friction calipers (sorry John, its better than Alcon :wink: ) front and rear with their own master cylinders and tilton pedal assembly & bias bar would be the best. But i'd haveto agree with Johns previous post. BUT, many prototypes in Grand Am, ALMS, JGTC run the same front/rear caliper, but you can't say that is 'proper' without considering their are far too many variables than just the caliper to affect brake bias (and the fact that those racecars have everything adjustable from bias bars, pads, to rotor veins).
Dave's setup would probably be the best bang/buck. I agree with a previous post saying that this kit should adequate for 500+hp cars on track use and perfectly fine for daily driven use. The bigger front and smaller rear caliper is 'safer' -just like the factory, allowing more force going to the front of the car which at its limit, will induce an understeer than a possible oversteer from recieving too much rear bias. So, this kit should be perfect for everyones use, and if a driver could reach the limits of this kit and finds a bit too much trail-braking understeer, then they could afford to buy a $100 bias adjuster to suit their needs. 95% of the people probably wont haveto worry about that so in conclusion, great bang/buck, good quality product, and should be an effective and safe braking system. I'm for it